Specialties

As an allergist / immunologist in Westminster, Dr. Roger Nguyen offers specialized care for allergic reactions and immunological disorders in patients of all ages. Dr. Nguyen may treat and manage conditions like asthma, hives, and a range of allergic reactions like environmental or food allergies. He may also treat rhinitis & sinusitis, as well as other disorders that affect the body's immune system.

An internist in Westminster, CA, Dr. Roger Nguyen specializes in the primary care of adults through diagnosis and treatment of cross-system illnesses that may affect multiple organic systems. Dr. Nguyen may also refer patients to specialists when medically needed. For example, patients experiencing severe breathing problems would be referred to a pulmonologist for further diagnostic tests or therapies.